Prince Frederik—the son of Prince Robert of Luxembourg, the first cousin of Grand Duke Henri, the current ruler of Luxembourg ...
From Prince Albert to Princess Charlene, here’s everything you need to know about the moneyed (and scandalous) monarchy.
the Bourbons of France, and the British royal family, often married cousins. The Spanish Habsburgs, who ruled for nearly 200 years, frequently married among close relatives. Their dynasty ended in ...